I've been running for about a year and for the last 2 months or so I have been training to improve my 5k PB. I run exclusively in Vibram Five Fingers and have put about 700 miles in this year so far.
At a recent event a friend of mine also showed up in his Vibrams but told me I should get a pair of Newtons and that racing in them would give me free speed in a 5k race. He said it would be perhaps a minute improvement just by changing shoes.
Any thoughts or experience? Is it worth racing and training occasionally in Newtons or some kind of racing flat? My 5k is low 22:00, not very fast, if that matters. Aiming to go under 20:00 in the future.